templates/index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PDF Translator</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
        }
        h1 {
            text-align: center;
        }
        .form-container {
            border: 1px solid #ccc;
            padding: 20px;
            border-radius: 5px;
        }
        label {
            display: block;
            margin: 10px 0 5px;
        }
        input, button {
            width: 100%;
            padding: 8px;
            margin-bottom: 10px;
        }
        button {
            background-color: #4CAF50;
            color: white;
            border: none;
            cursor: pointer;
        }
        button:hover {
            background-color: #45a049;
        }
        #status {
            margin-top: 20px;
            font-weight: bold;
        }
        #download-links {
            margin-top: 20px;
        }
        .download-link {
            display: block;
            margin: 5px 0;
            color: #007BFF;
            text-decoration: none;
        }
    </style>
</head>
<body>
    <h1>PDF Translator</h1>
    <p>Upload a PDF and translate it into Hindi, Tamil, or Telugu.</p>
    <div class="form-container">
        <form id="translate-form" enctype="multipart/form-data">
            <label for="pdf_file">Upload PDF:</label>
            <input type="file" id="pdf_file" name="pdf_file" accept=".pdf" required>
            
            <label for="entities">Entities to Preserve (comma-separated):</label>
            <input type="text" id="entities" name="entities" placeholder="Optional">
            
            <label for="languages">Target Languages (comma-separated):</label>
            <input type="text" id="languages" name="languages" placeholder="Hindi, Tamil, Telugu" value="Hindi,Tamil,Telugu">
            
            <button type="submit">Translate</button>
        </form>
        <div id="status"></div>
        <div id="download-links"></div>
    </div>

    <script>
        document.getElementById('translate-form').addEventListener('submit', async (e) => {
            e.preventDefault();
            const formData = new FormData();
            formData.append('pdf_file', document.getElementById('pdf_file').files[0]);
            formData.append('entities', document.getElementById('entities').value);
            formData.append('languages', document.getElementById('languages').value);

            document.getElementById('status').textContent = 'Translating...';
            document.getElementById('download-links').innerHTML = '';

            try {
                const response = await fetch('/translate', {
                    method: 'POST',
                    body: formData
                });
                const result = await response.json();
                if (response.ok) {
                    document.getElementById('status').textContent = result.message;
                    result.files.forEach(file => {
                        const link = document.createElement('a');
                        link.href = `/download/${file}`;
                        link.textContent = `Download ${file}`;
                        link.className = 'download-link';
                        document.getElementById('download-links').appendChild(link);
                    });
                } else {
                    document.getElementById('status').textContent = `Error: ${result.error}`;
                }
            } catch (error) {
                document.getElementById('status').textContent = 'Error: Something went wrong.';
                console.error(error);
            }
        });
    </script>
</body>
</html>